Liquid-fuel burner



Nov. 29, 1,927,

R.C.HOPNS LIQUID FUEL BURNER Filed Apil 4. 1924 Patented Nov. 2.9,`1927.

nonnen c. Horaires, ornnnfnjrten, ont@ intatti manine-ann `infamia?Application led April 4,

The invention relates to liquid fuel burners of the type in Whichtheliquid fuel is atomized by air or other fluid pressure.

The objects of the invention are to provide a burner of this characterinV which the liquid fuel is ejected in a thin film at nearly rightangles to the blast of air or other fluid and against a toothed rin'gfwhich serves to further break up the-fuel.

The above and other objects may be attained by constructing the burnerin the manner` illustrated in the accompanying drawing, in Which Figure1 is a longitudinal, sectional vieW i through a burn-er embodying theinvention;

and

F ig. 2, an end' elevation of the oil tube and ring With the valveremoved. Y

Similar numerals refer to similar `parts throughout the drawing.

The burner comprises the L-shaped casing 1, having the upper neck 2 toWhich an air blast pipe 3 is connected, and the reduced neck 4 at oneend to receive the oil tube 5.

The oil tube is held in adjusted position Within the burner casing as bya `set screw 6 and extends longitudinally through the casingA to a pointnear the outlet end 7, to which may be connected any suitable tubularmember 8 in which the combustion takes place. f

The outer end of the oil pipe may be threaded as at 9 for the connectionof a coupling 10, to which the oil supply pipe 11 is attached. Asillustrated in the drawing, this coupling may be in the form of a T, anda threaded plug 12 may be provided for closing the outer end.

rl`he inner end of the oil tube 5 terminates in the conical portion 13having the reduced valve seat 1st at its extremity. Theconical valve 15is mounted upon the stem 16 axially slidably located through Webs 17. f

A coil spring 18 is located around the stem between one of the Webs 17and the shoulder 19 fixed upon the outer end portion of the stem, forthe purpose of normally holding l I lng provided With an outlet opening,an air the valve 15 seated upon the seat 14 at the tapered end of theoil tube.

Ai ring 20, triangular in cross section, is located concentrically Withthe taperedy end of the oil tube 5, being preferably formed in`` tegraltherewith and connected as by the 1924. serial No. 704,170.

Webs 21. This ring 1s provided With the radial slots 22 located throughthe reduced or tapered side thereof.

In the operation of the burner, oil is sup plied through the pipe l1into the tube 5r 'and air under` pressure is supplied through thin ydiskshaped film .directedtoward the slotted ring 20.

rilhe -air passing around the insideV ofthe ring toward the tube 8,breaks up the greater part of this `film of oil, mixing the atomized oilWith the air and carrying the same into the combustion tube 8.

` rIhe remainderof the oilstriking the slot` ted ringQO, Willv befurther broken up and any particles thereof which `pass through theslots in the ring, will be caught in a concent-ric current of'airpassing varound the outsideof the ring and will be properly mixed Withthe air as it passes into the combustion tube 8.

I claim i 1. A liquid fuel burner comprising a casing, an air conductingpipe communicating With the casing, an oil conducting tube exe tendinginto the casing, a spring pressed valve normally closing the inner endof the oil tube and a slotted ring spaced from the valve andthe interiorof the casing and c oaxial therewith the valve being arranged to deflectand break up the oil lagainst said ring.

ing, an air conducting pipe communicating with the casing, an oilconducting tube ex oil tube, a slotted ring spaced from the valve andthe interior of the casing and coaxial therewith, and means foradjusting the tube longitudinally Withinthe casing the valve beingarranged to deflect and break up the oil against said ring.

3. A liquid fuel burner comprising a casconducting pipe communicatingWith the casing, an oil tube extending into the casing,`a spring pressedvalve fornormally clos# ing the inner end of the oil tube, a ring spacedfreie the valve .and xed t0 the eil 2. A liquid fuel burner comprisingav casthe inner end of the oil tube, a slotted ring 10 spaced from thevalve and fixed to the oil tube, and means for adjusting the oil tubeand ring with reference to the Outlet opening the valve being arrangedto deflect and break up oil against said ring.

In testimony that I claim the above, I have hereunto subscribed my name.

ROBT. C. HOPKINS.

